Jen s christian



(No Model.) 1 i J. G. P. SORENSEN. SAIL FOR WINDMILLS.

No. 595,553. Patented Janf l, 1898.

UNITED STATES PATENT OFFICE.

.IENS CHRISTIAN PEDER SGRENSFN, OF SKANDERBORG, DENMARK.

SAIL FOR WlNDMlLLS.

SPECIFICATION forming part of Letters Patent No. 596,553, dated January 4', 1898.

Application fil d October 15,1896. Serial No. 608,954. (N 0 model.)

To all whom it may concern:

Be it known that I, J ENS CHRISTIAN PEDER SoRENsEN, manufacturer, a subject of the King of Denmark, residing at Skanderborg, Denmark, have invented certain new and useful Improvements in Conical-Center Sails for Windmills; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to letters of reference marked thereon, which form a part of this specification.

My invention relates to windmills, and has for its object the construction of the wheel so as to present the greatest surface to the .wind with such a form as to give the most economical direction to the wind and derive the greatest possible power with a minimum size of wheel.

Referring to the accompanying drawings, in which like letters of reference refer to like parts, Figure 1 is a side elevation of two vanes, showing the central portion or cap in section. Fig. 2 is a plan View. Figs. 3 and 4 are sections of a vane on line w as of Fig. 1 and on line y y of Fig. 2.

The center of the wheel a is a conical cap for giving an outward direction to the wind which strikes it and compel its motion to be along the blades 1?, so as to concentrate the driving force as much as possible near the ends of the blades. The sides of the central cone a may be convex or concave, as indicated by dotted lines, and lap over the smaller inner ends of the fan-vanes. The apex of the cone 0 may be left off altogether or made removable and an extra spider (not shown) inserted to allow of a stronger attachment to the driving-shaft.

The vanes b are secured to a spider cl, whose central boss 2 is fastened to the driving-spindle, and these vanes b are made concave or spoon-shaped. Theirinnernarrower ends fastened under the cone have the same slant or pitch as the cone, which gradually decreases toward the bowl or spoon of the vane and are inclined in the proper direction, the inclination being adjusted by means of the fastenings to the spider-arms or by other devices. The wind moving in the direction of the arrow and which strikes the conical center is directed along the concave vanes and across the same, leaving the vane at its lower edge and concentrating its force toward the spoon-shapedvane, of a conical center having the same pitch as the inner end of the Vane, substantially as described.

3. In a wind-wheel, the combination with spoon-shaped vanes whose longitudinal edges lie in different planes, of a conical center overlapping the ends of the vanes and havin g the same pitch, substantially as described.

4. In a wind-wheel, the combination with spoon-shaped tapering vanes whose longitudinal edges lie in different planes of a conical center overlapping the ends thereof and havingthe same pitch, substantially as de scribed.

5. In a wind-wheel, the combination with inclined spoon-shaped vanes, of a conical center overlapping the inner ends thereof and having the same pitch, and a spider to which the conical center is rigidly and the vanes adj ustably secured, substantially as set forth.

In testimony whereof I affix my signature in presence of two Witnesses.

JENS CHRISTIAN PEDER SORENSEN.

Witnesses:

HENRIK LANGE, VALD. HANSEN. 

